The effect of O-(beta-hydroxyethyl)-rutoside (HR) on macromolecular leakage, thrombosis and haemostasis in experimental animals.

O-(beta-hydroxyethyl)-rutoside (HR) (Venoruton, Zyma AS, Nyon, Switzerland) has been investigated experimentally to evaluate the effect on microvascular permeability and thromboembolism. Permeability to macromolecules is diminished in a hamster cheek-pouch model. Haemostatic plug formation is impaired whereas laser-induced intravascular platelet aggregation is uninfluenced. There is a small but insignificant protection against sodium morrhuate (Eli Lilly and Co., Indianapolis, Indiana) induced femoral vein thrombosis.